HELP!!!!!!!!!!!!
The ever present shifting demons have visited our little machine AGAIN!!! Replaced angle sensor (Because it was acting like the times before when it was replaced).....And...by the way...... THE PRICE HAS NEARLY DOUBLED [img]i/expressions/face-icon-small-sad.gif[/img]!!!! Now am getting the 4 blink gear position switch code. ANY ideas on where this darn thing is, and is it something my son and I can replace (we've done darn near all the other maintenance on this "jewel") or is it a LONG trip to the dealership for repairs?
Need to know like FAST as this machine keeps the ol' ponderosa running smooth. Cows and horses won't eat unless the chow comes on this machine to them!!!
THANKS A $$$$$$$$$$$$!!!!

 

Code #4 is "Gear position switch system" ... Check the connections at the gear position switch & at the ECU


Gear Position Switch Inspection at ECU
Turn the ignition switch to "OFF".
Disconnect the ECU connector (22P/Black).
Check for continuity at the ECU connector of the
wire harness side as follows:
Connections:
. Light Green - Body Ground, when shifting into neutral
. White/green - Body Ground, when shifting into 1st gear
. White/red - Body Ground, when shifting into 2nd gear
. Blue/white - Body Ground, when shifting into 3rd gear
. Yellow/orange - Body Ground, when shifting into 4th gear
. Light Blue/white - Body Ground, when shifting into 5th gear
. Gray - Body Ground, when shifting into reverse
Is there continuity?
NO - GO TO STEP 3.
YES - GO TO STEP 4.

3. Gear Position Switch Inspection
Disconnect the gear position switch connector
(6P). Check for the continuity at the gear position
switch connector as follows:
Connections:
. Light Green/red - Body Ground, when shifting into neutral
. White/green - Body Ground, when shifting into 1st gear
. White/red - Body Ground, when shifting into 2nd gear
. Blue - Body Ground, when shifting into 3rd gear
. Yellow - Body Ground, when shifting into 4th gear
. Light Blue/white - Body Ground, when shifting into 5th gear
. Gray - Body Ground, when shifting into reverse
Is there continuity?
NO - Faulty gear position switch
YES - Open circuit in related wire

4. ECU Inspection
Connect the ECU connector (22P/Black).
Disconnect the gear position switch connector
(6P).
Turn the ignition switch to "ON".
Measure the voltage at the gear position switch
connector of the wire harness side as follows:
Connections:
. Light Green/red (+) - Body Ground (-), when shifting into neutral
. White/green (+) - Body Ground {-), when shifting into 1st gear
. White/red (+) - Body Ground (-), when shifting into 2nd gear
. Yellow/white (+) - Body Ground (-), when shifting into 3rd gear
. Yellow/orange(+) - Body Ground (-), when shifting into 4th gear
. Light Blue/white (+) - Body Ground {-), when shifting into 5th gear
. Gray (+) - Body Ground (-), when shifting into reverse
STANDARD: 5V
Is the voltage within 5V?
NO - Replace the ECU unit with a new one
and troubleshoot again
YES - GO TO STEP 5.
5. ES System Failure Checking
Check the ES system failure (the gear position indicator blinks) when turning the ignition switch from "OFF" to "ON".
Does the gear position indicator blink?
NO - No problem (temporary failure)
YES - Replace the ECU with a new one and troubleshoot again

 

That is the gear position switch test at switch & at ECU ... If you want the PDF section post or PM your email address ...

 

There seems to be a large number of ES problem posts. Let these be a lesson to those of you thinking about purchasing one........